It was Crick and Watson who worked out the structure of DNA in the 1950s, but its discovery was made nearly 100 years previously by a Swiss physician called Frederick Miescher.
The residents will range in nationality, cultural, religion, age, sex, political association, socio-economic backgrounds, etc. The Assisted Living Federation of America reports that the average age of an assisted living resident is 86.9 years (female average age 87.3; male average age 85.7). Female residents (73.6%) outnumber male residents by almost 3 to 1.
For example, according to North Carolina's Division of Health Service Regulation, you have to be at least 21 years old. In Alabama, the Board of Examiners of Assisted Living Administrators notes that you have to be at least 19 years old. Requirements may also include a criminal background check.